Behind the catchy promises: what ads don’t tell you about the real-world performance of wall-mounted heat pumps in Québec
In the Québec market for wall-mounted heat pumps, the overwhelming number of models, brands, ad campaigns, and flashy promotions can be misleading. Across Montréal, Laval, Longueuil, the North Shore, and the South Shore, many homeowners end up relying on marketing claims that often don’t reflect the reality of a reliable and efficient HVAC installation. At AirGreen, we’ve seen the consequences of falling for these sales tactics: underperforming systems, disappointed customers, poorly chosen equipment… Here are the most common marketing lies about wall-mounted heat pumps in 2026—and the technical truths you absolutely need to know before making a decision.
“This model is perfect for every home, no exceptions”
This is probably the biggest myth pushed by advertising. In reality, no heat pump model is universally suitable:
-
A 9,000 BTU unit might be fine for a closed-off 400 sq. ft. bedroom but would be completely ineffective in an open-concept living room.
-
A poorly insulated home will require a more powerful system than a new build with top-tier insulation.
-
The placement of the indoor and outdoor units directly affects the system’s overall performance.
At AirGreen, we always conduct a precise thermal load calculation for each home. It’s the only reliable way to ensure your unit is properly matched to your environment.
“This heat pump is 100% silent”
Tech sheets often list a noise level of 19 dB, supposedly as quiet as rustling leaves. But the truth is:
-
That number only applies to silent mode at the lowest fan setting.
-
In heating mode at full capacity, noise levels can easily rise to 38–45 dB, especially during extreme cold.
-
The quality of the installation itself matters: a poorly mounted wall bracket can create vibrations and resonance noise.
An experienced installer like AirGreen can minimize these issues by optimizing placement, anchoring, and soundproofing.
“This heat pump heats efficiently down to -30 °C”
This claim is everywhere, especially for so-called “cold climate” models. But be cautious:
-
That’s usually the minimum operating temperature, not the temperature at which the unit maintains full output.
-
Below -15 °C, most systems gradually lose capacity.
-
Some units will rely on electric resistance heating to make up for lost output—leading to higher energy bills.
We always recommend choosing a cold-climate certified model, with verified performance at -25 °C, along with a backup heat source for extreme weather.
“Simple installation in 3 hours, no modifications required”
This message is designed to downplay the complexity of proper HVAC installation, which is misleading:
-
Installation often involves drilling through exterior walls, sometimes brick or stone, and requires precise slopes and airtight sealing.
-
Refrigerant lines must be bent to the correct radius, following manufacturer specifications.
-
A proper install requires a full vacuum pull, nitrogen pressure test, and clean, secure line connections.
At AirGreen, a standard installation takes between 5 and 8 hours, depending on the setup, because we follow every technical step without cutting corners.
“A heat pump = guaranteed savings on your electric bill”
While a heat pump is more energy-efficient than traditional electric heating, savings are not automatic:
-
If it’s oversized, it will short-cycle, reducing efficiency.
-
If it’s undersized, it will run constantly and use more energy.
-
If it’s poorly maintained, performance can drop by up to 30% within two years.
Actual savings depend on proper sizing, smart use, and regular HVAC maintenance.
“This model qualifies for all rebates”
Marketing often confuses certified models, approved installers, and eligible properties. In reality:
-
Rebates like Hydro-Québec’s LogisVert require specific energy ratings (SEER, HSPF, SCOP).
-
The unit must be installed by an accredited contractor.
-
Your residential address must fall within the program’s eligible zones and conditions.
At AirGreen, we always verify your project’s eligibility before confirming rebate availability.
“This brand is the best on the market”
A classic claim… but it means nothing in practice, because:
-
Every brand has strengths and weaknesses depending on the installation context.
-
Some high-end models excel in cooling but struggle with winter heating.
-
After-sales service, repairability, and parts availability are also critical factors.
At AirGreen, we install a curated selection of brands proven to perform in real Québec conditions: Fujitsu, Gree, Midea, Lennox, Haxxair, and more. Our recommendations are 100% brand-independent, based solely on results in the field.
Conclusion: don’t believe everything you read on the box
A wall-mounted heat pump can be a fantastic system—but only if it’s properly chosen, correctly installed, and professionally maintained. Marketing messages simplify reality, but comfort, durability, and real savings only come through a rigorous process.
At AirGreen, we guide you with no empty promises. We install wall-mounted heat pumps every week across Montréal, Laval, Longueuil, the North Shore, and the South Shore, with a transparent, personalized approach. Our only promise: technical honesty, flawless installation, and long-lasting comfort.